Slicing machine



March 4, 1930. w. P. VAN LAMMEREN 1,749,402

SLICING MACHINE Filed May 1928 2 Sheets-Sheet l March 4, 1930. w. P. VAN LAMMEREN SLICING MACHINE Filed May 5, 192

2 Sheets-Sheet 2 Patented Mar. 4, 1930 Wire mm BATE-NT arms WEHLE M S 'lE' -BUS VAN; LAMMEBE X Q QOB OHOTEi\' NETHERLANDS, essrc-non, TO U. s. SLICING 'MAQEIJSIIE'CQMQEQNEQ or La ron'rn, nnrnna, A co'nronn'rron Q3. INDIANA Application filed May 5, 1928, Serial No. 275,401, and in Great Britain May 25, 1927.

In machines for slicing meat and other substances, the substance to be sliced by the knife of the machine is generally clamped to afeed plate by means of a clamp or press including a clamp bar or equivalent (hereinafter reterred to simply as a clamp bar) supported on one or two uprights upstanding from the feed plate. In some constructions, the clamp bar is normally locked to the upright or uprights, but can be released at will i from it, orfrom either or both of them, in

order to move the bar into any desired position relatively to the feed plate. Various devices, such as cams, detents, and friction rings, are in present use for locking clamp bars to their uprights, and the object of this invention is to provide an improved device for this purpose.

In accordance with this invention, the improved device for locking the clamp barto its upright, or each of its uprights, is characterized by a spring which is coiled around and normally clutches the upright, but which can be released therefrom at will. The spring may be so arranged that its clutching action can be relieved by pressing on one of its ends and may also be arranged that, when a pressure is applied to the clamp bar in either direction parallel to the upright, the clutching action of the spring will automatically increase.

In a preferred construction, in which a clamp bar is pivotally carried by sleeves slidably mounted on'two uprights, springs are coiled around the uprights andare operatively connected, at their ends, to the sleeves,

the arrangement being such that the springs normally clutch the uprights, and thereby lock the sleeves thereto,- at will, so that the sleeves, and the clamp bar tl1erewith,*can' be shifted. If desired,

means may be provided wherebythe springs can be released either individually or simultaneously, said means beingpreferably arranged on ahandle extending fronrthe clamp bar, so that the latter can be'manipulated by one hand. 7

The invention is illustrated by wa-yqf e gample in the accompanying drawing in Which.-

but can be released Fig. 1 is an elevation of a clamp having the improved locking device applied thereto;

' Fig. 2 is a fragmentary view showing part of Fig. 1' in vertical section; and

Figs. 3, 1 and 5, respectively, aresections on the lines IIIr-III, IVIV and if-V of Fig, 1.

Ref r ing o th draw ng, he fixed euright 1 and hinged uprigh 2 represent known parts of the usual press of a slicing machine, the usual feed plate being indicated conventionally by the lin The sleeves 3 and e are slidably mounted on the uprights 1 and 2, respectively. Each of the le e 3 an i pi tel y o n cted by c s 15 or 6 to a clamp ar 7 ear 0. 01? o r e d her f. F r m n p l tien the ba 7, th lat er is p vid d h a han l 8. The clamp bar 7 is formed with an eye 9 and wit a rk d en 1. for he PhSSdg of th leeve an e. the ey an the rk being o d mensioned to p rm t t e Clamp ar to be nc ine rela i e y o the f rlate- Ea h l e e 3 or s so. formed a to 1 10- d an a nular re e s 11 b e i a d the relativ upright, ach recess l b ng adapted to h se a lical spr ng" 1 0 3 i ed nd th upright The upp and lower n 1 12 and 1 o t e p ng 12 and 1 ar n outwa ds n re p ive y Pass hrough iangul ap r 4, l an 5Z- Il12 1 l eves M 2 1. he c n tru ion h wn, th lowe end 1 f the Sp n 2 is onnected o a knob 16 h l t e ppe end 13 of the spring 13 isv connected to a knob 17. The apertures 14. 15, through which pass the ends of the spring connected to th kn bs 7, are formed wi slo s 1% 5- The upper e ds f the r ce s s 1 a closed by caps 18 screw-threaded into the s eeve V g Y The springs 12 and 13 are wound to OPPO- site handsfthe former being left-handed While the latter is right-handed. Further, the normal internal diameter of the springs is slightly less than the diameter of the up rights, so that, normally, the springs tightly clutch the uprights and thereby lock with a frictional grip the sleeves and the bar in position thereon. By displacing the knob 16 or 17 into the slot 14 or the relative sleeve 3 or 4 is thereby enabled to be shifted along of the springs 12, 13, so that the'bar 7 can be manipulated entirely by one hand. When the operator withdraws his finger and thumb from the knobs 16' and 19*, the springs will return automatically to the position in which they clutch the uprights.

The triangular apertures are each formed with an inclined face 14 or 15 against wh ch the adjacent bent endof the relative spring 12 or 13 bears. Should upward pressure (for example, the reaction of the substance being clamped) be brought to bear on the sleeves, the springs will be caused to gr1p theuprights more tightly by the action of the 1nclined faces 14 and 15 of the upper apertures 14 and 15 The springs would be similarly tightened, should downward pressure (for example, the weight of the bar) be brought to bear on'the sleeves by the action of the faces 14 and 15 of the lower apertures 14 and 15 i The apertures 14 and 15* are closed by flanges 16 and 17 on the knobs l6 and 17.

The form of press illustrated has been chosen simply for the,- purpose of illustration and it will be obvious that the invention could be readily applied to other kinds of clamping presses without departing from the scope of this invention. The clamp bar might have two handles. or the sleeves carry-' ing it might each have one, each handle being associated, if desired, with means forrelieving the clutching action of the relative spring. Obviously, the sleeve members could constitute thestationary supports withthe upright or rod members slidably mounted therein and carrying the clamp bar.

I claim 1. In a work clamp for slicing machines, a sleeve member, a rod member disposed in said sleeve member, one of said members being i guided for sliding movement by the other of said members and-a clamp bar'carried by said sliding member, a friction element disposed between said members frictionally engaging said rod member to releasablyhold said members against relative sliding movement, said friction element having a separate releasing means connected therewith and supported on one of said members to disengage said friction element from said rod 2. In a Work clamp for slicing machines, al

sleeve member, a rod member disposed in said sleeve memben'one of said members being guided for sliding movement by the other of said members, a clamp bar carried by said sliding member, a spring disposed between said members tending normally to grip said rod member and hold said members against relative movement. 1

3. In a work clamp for slicing machines, a sleeve member, a rod member disposed in said sleeve member, one of said members being guided for sliding movement by the other'of said members, aclamp bar carried by said sliding member, a spring disposed between said members tending normally to grip said rod member and hold said members against relative movement, said spring hav 'ing a releasing means connected therewith to disengage said spring from said rod member and permit relative said members.

a sleeve member,

movement between ing guided for slidingmovement by the other of said members, a clamp bar carriedby said sliding member, a helical spring disposed around said rod in said sleeve, tending normally and hold said rod member andrsleeve meme ber against relative movement.

5. In a work clamp for slicing. machines, a sleeve member, a rod member disposed in said sleeve member, oneof said members being guided for sliding movement by the other of said members, a clamp bar carried by said sliding member, a helical springdisposed around said rod in said sleeve, said spring tending normally to grip said rod member and hold said rod member and sleeve member against relative movement, said spring having a releasing member connected therewith and positioned outside ofsaid sleeve, said releasing member being operable to lessen the grip of said spring'on said rod and permit relative movement between said rod and sleeve.

6. In a work clamp for slicing machines, a sleeve member, a rod member disposed in said sleeve member, one of said members being guided for sliding movement by the other of said members, a clamp bar carried by said sliding'member, a helical spring disposed around said rod insaid sleeve, tending normally to grip said rod and hold said rod member and sleeve member against relative movement, the ends being held by said sleeve, one, of said ends being extended through a slot in said sleeve.

7. In a work clamp for slicing machines, a rod member, a sleeve member slidablv mounted thereon, a clamp bar carried by said said spring of said spring e sleeve member, a helical spring disposed around said rod member in said sleeve tending to grip said rod member and hold said a rod member, a sleeve member slidably mounted thereon, a clamp bar carried by said sleeve member, a helical spring disposed around said rod member in said sleeve tending to grip said rod member and hold said members against relative movement, said sleeve member having orifices therein with inclined faces upon which the ends of said spring hear, one of said ends extending through said sleeve to provide manually operated means for disengaging said spring from said rod member.

,9; In a work clamp for slicing machines, a pair of rod members having sleeves slidably mounted thereon, a clamp bar having a handle portion carried bysaid sleeves, a retaining element associated with each sleeve and rod member to engage said rods and hold said sleeves thereon, means positioned on one of said sleeves and adjacent said handle portion operative to disengage both of said retaining elements from said rod members to permit said sleeves to slide on said rod members, said retaining elements being 'yieldingly urged to re-engage said bars upon the release of said means.

:said sleeves thereon, finger operated releas- 7 111g means connected to one of said retaming elements, and thumb operated releasing means connected to the other of said retainmg elements, both of said releasing means being positioned adjacent said handle portion to be easily accessible to the hand of the operator manipulating said clamp bar.

11. In a work clamp for slicing machines,

' a pair of rod members having sleeves slidably mounted thereon, a clamp b'ar having a handle portion carried by said sleeves, a retaining element associated with each sleeve and rod member to engage said rods and hold said sleeves thereon, finger operated releasing means movable toward said handle and connected to one of said retaining elements, and'thumb operated releasing means connected to the other of said retaining elements, said thumb operated releasing means being mounted for movement in a direction substantially opposite to the d1rect1on of moveef said finger perated releasingmeansz 1 22' The cenibina loll set forth claim E0 wher said retaining elements are ente m a ically urged to r e-engage said ba aster their" disengagement theref om by said re leasin means: 1 I I 13. The combina'tienset fiortli melanin-11 wherein said retaining elements are automatically urged- I e-engagesa'id b" att'er their disen agement therenioin by said releasing y 14 In: a werkrclamp' tor sheingmachines, a paino'f supportsgwa sleeve sltdably niounred on each of said supports, a clampba-r having hand-le portion carried by" said sleeves, coil springs wound' around said supports andidisposedbetween" said'supp'orts and sleeves tend ing to normally grip said supports, one of said springs being: wound around said support in a direction" opposite to the; other spring, releasing means connected tosaid springs, said releasing means being: positioned accessiblefrom sa'i cl handle'portiont 1 5 Ina-work clamp for slicing machine's,

a pair of sup'ports,=. a" sleeve' slidably mounted" on each of said supports, a clamp bar having? a handle portion carried said sleeves, coil springs wound around said supports i'n oppo site directions,-v said springs being disposed between said sleeves and: supports and tend ingnormally to grip said supports, thee'nds of said springsextending through orifices in said sleeves, oneofsaid sleeves having finger engagingmeans andtlie'other athumb engaging means, both of said means being positioned accessible from said handl'e por'tioni 16; A work clam pfor slicing machines comprising aypair of uprights adapted to be" mounted on a slicing imachineta'ble', a sleeve" slidablymounted on each of said-uprights, a springsu'rrounding: on'e'ofsaidiuprigfhts connected to the sleeve on said upright for resisting, movement 'o'f said" sleeve along said upright, and a clamping bar supported by said sleeve.

17 Work clampforslicing machines" comprising a pair'of uprights adapted'to be mounted on a slioingtniaohine table, sleeve slidably'mounted'oneach of saidiipr ights' spring, surrounding oneiofsaid upriglits" l connected to't'he sleeve on" said" upright for resistlng movement of said sleeve alongf said upright,,a* clamping bar supported by said" s1eev'e,:and means" for rendering said spring inoperative to permit movement oft'he sleeve to whichsaid spring: is connected along the upright upon which said sleeveis moan-teat 18. A clamp for slicing machines comp 111g} an upright; a member adap'ted to 'slid e along said upright for supportinglafiolampiiig bar, a spring connected to said msmber adapted t'cr enga'g said apr iglit to prevent movement of said member along said upright, and an inclined surface on said member adapted to be engaged by one end of said spring and to hold said spring'in gripping engagement with said upright While permitting the end of the spring to be moved against the action of said inclined surface to release the spring from gripping engagementvvith said upright and permit movement of said member along said upright.

19. A clamp for slicing machines comprising a clamping bar, a pair of sleeves for supporting said clamping bar, each of said sleeves being slidable along separate uprights on a slicing machine Work supporting table, springs Withinsaid sleeves adapted to encircle their respective uprights and normally urged into grippingengagement With said uprights, and inclined surfaces on each of said sleeves adapted to increase the gripping action of saidsprings on said uprights When force is applied to said sleeves to move them along said uprightsin either direction.

20. Av device as claimed inclaim- 19* in Which one of said uprights is adapted to be pivoted to said slicing machine table;

21.vA device as claimed in claim 18. in

which means are provided for releasing said springs. l

' 22. A clamp for slicing machines comprising a clamping, bar, a sleeve for carrying said clamping bar, an upright upon which said sleeve is slidably mounted, .said upright adapted tobe supported upon the table of a slicing machine, a coiled spring housed Within said sleeve and-surrounding said upright,

' April, A; D.

the internal cross-sectional 'area of said spring being normally less than the crosssectional area of said upright so that when thespring is expanded over said upright it tends ,to grip said upright and prevent movement of saidsleeve longitudinally of said upright, and means arranged in a position to operatively engage said spring and increase its lnternal cross-sectional area sufficiently to permit relative longitudinal movement between said sleeve and said upright.

23. A clampfor slicing machines comprising a clamping bar, a sleeve for carrying said clamping bar, an uprightupon which said sleeve is slidably'mounted, said upright adapted to besupported upon the'table of a slicing machine, and a coiled spring housed Within said sleeve and surrounding said upright, theinternal cross-sectional area of said spring being'normally less than the crosssectional area of said upright so that When the spring is expanded over said upright it tends to grip said upright and prevent movement of said sleeve longitudinally of said upright. o

In testimony whereof I have signed my name to this specification on this 17th day of 1928. WILHELMUS PETRUS van LAMMEREN. 

